Strong daytime heating combined with abundant low-level moisture led to at least two severe thunderstorms that produced damaging hail in the Woodland to Apgar Campground in north-central Idaho.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MSO wrote it up.
Strong daytime heating combined with abundant low-level moisture led to at least two severe thunderstorms that produced damaging hail in the Woodland to Apgar Campground in north-central Idaho.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Missoula, MT wrote its last area forecast discussion before the first event at Jun 5, 11:31 AM PST, 1 hour 57 minutes earlier.
Area Forecast Discussion National Weather Service Missoula MT 131 PM MDT Sun Jun 5 2022 .DISCUSSION...Recent rain fall has left the air mass over the region very moist with plenty of fuel for showers and thunder storms this afternoon. Additionally, there is a shortwave moving through southwest flow on the eastern edge of a broad trough, which is providing the forcing for showers and thunderstorms. The only ingredient in short supply this afternoon is instability. The strength of thunderstorms this afternoon and evening depends mostly on how unstable it can get today. Typically a very moist air mass like this one causes a lot of cloud cover, which limits the sunshine, which limits the instability. And that is what we're seeing today. So showers with some general thunderstorms mixed in is what we'll get this evening for most locations. There is a very marginal chance of some thunderstorms causing large hail in central Idaho this afternoon where they should get a little more sun today. As the trough over the northeastern Pacific progresses eastward tonight and Monday, the region will see some more rain. A blanket of cloud cover will keep the temperatures from dropping too low overnight. So warmer overnight temperatures will support continued snow melt, and with the rain we expect to see rivers to continue to rise with all the runoff. More on the river flood potential in another section below, but we expect another half inch to three quarters of an inch of rain in central Idaho by Monday morning. Western Montana will see about 0.10 to 0.40 inches more of rain. The rain will be more broken up into showers and thunderstorms once it crosses into Montana, so there will be quite a bit more variability on the amounts from location to location. Tuesday through the end of the week a ridge builds over the northern Rockies. Overall, this will cause some nicer weather. However, with so much moisture still around we expect it to be cloudy in the afternoons with some isolated to scattered air mass showers. Next weekend, there is potential for an atmospheric river type weather system. Ensemble models actually have pretty good agreement on there being some type of wet weather system between Saturday and Monday, with about 80 percent or more of ensemble members showing it. As a result, when looking at ensemble data the average or probability for any given period is lower because it is spread across several periods. That means the probability of an event happening sometime next weekend or early next week is actually higher than the probability for any given day might show. The good news is that it looks likely that another round of moisture is on the way. && .AVIATION...A shortwave in southwest flow is moving across the region this afternoon causing some showers and thunderstorms. As the broader trough across the northeast Pacific continues to influence the region tonight, showers will continue through tomorrow. Overall conditions will be unstable enough that we expect intermittent MVFR to VFR conditions with showers. The chance for thunderstorms really starts to decrease around 06/03Z. After this time period conditions become more stable with better large scale forcing causing more widespread showers than thunderstorms through the morning. Monday afternoon the sunshine will help destabilize things again causing another round of afternoon showers and thunderstorms, though there will be less coverage than today. && .HYDROLOGY...With recent snow melt and rain showers, rivers are running high. The rain this weekend will push rivers higher still, but the only location we expect to reach flood stage is the Bitterroot River near Bell Crossing and Victor in Ravalli County, Montana. We only expect the river to come slightly above flood stage and remain there for a few days. Due to recent changes in the river channel and the marginal levels of the expected flooding, we are unsure of the impacts this will cause. There has already been some field flooding occurring along the river, but this is typical of high flows and of minimal impact. We have issued a flood advisory for the Bitterroot River near Victor due to the expected rises and marginal impacts. We will continue to monitor the situation there closely and will upgrade to a warning if the situation warrants. Other locations of concern include the Bitterroot River near Missoula and the Clark Fork River above Missoula. So far, forecasts have kept these locations below flood stage, so no warnings or advisories have been issued. The expected precipitation will be heaviest in the Bitterroot Mountains of Idaho and extreme west central Montana. These areas feed into the Bitterroot River. Less precipitation is expected in areas that feed into the Clark Fork River above Missoula, so there is less concern there but we are still watching it closely. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...None. ID...None. &&
Special Weather Statement
National Weather Service Missoula MT
124 PM PDT Sun Jun 5 2022
IDZ005>007-052115-
Southern Clearwater Mountains ID-Northern Clearwater Mountains ID-
Orofino/Grangeville Region ID-
124 PM PDT Sun Jun 5 2022
...A strong thunderstorm will impact portions of north central Idaho
and southwestern Clearwater Counties through 215 PM PDT...
At 123 PM PDT, Doppler radar was tracking a strong thunderstorm near
Weippe, or 7 miles north of Kamiah, moving northeast at 25 mph.
HAZARD...Winds gusting 20 to 30 mph. Brief but heavy rain is
expected.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down small tree limbs and blow
around unsecured objects.
Locations impacted include...
Pierce, Weippe, Musselshell, Cardiff, Jaype, Greer, Pardee and
Woodland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 4675 11546 4646 11521 4625 11604 4626 11607
4629 11612 4638 11618 4640 11618 4641 11620
4641 11623 4643 11624
TIME...MOT...LOC 2023Z 244DEG 23KT 4633 11602
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPHThe Missoula radar (KMSX), 177 km away, was scanning. The volume nearest the first event began at 21:28 UTC.
3 hail. Local standard time, as filed.
A person on Facebook reported golf ball sized hail that dented their vehicle and killed one of their chickens. Another person in the area reported minor damage to a chicken coop, damage to gardens and minor damage to vehicles.
Facebook report showed jagged hail stone next to a ruler. They reported that their car windshield was damaged and there were dents. A neighbor's car windshield was also damaged.
A person on Facebook reported large hail south of Weippe.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2022Every state in 2022This day in weather historyWarnings in Idaho, June 2022
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1025628, 1025625, 1025616.